On Wed, Jun 24, 2009 at 01:43:35PM +1000, Neil Brown wrote: > Since this test was added, barriers have not worked on md, and (I > think) dm and similar devices that don't use __make_request and so > don't bother to set next_ordered. In dm, we added this: + blk_queue_ordered(md->queue, QUEUE_ORDERED_DRAIN, NULL); Alasdair -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel